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2011-02-25ipvs: unify the formula to estimate the overhead of processing connectionsChangli Gao
lc and wlc use the same formula, but lblc and lblcr use another one. There is no reason for using two different formulas for the lc variants. The formula used by lc is used by all the lc variants in this patch. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Acked-by: Wensong Zhang <wensong@linux-vs.org> Signed-off-by: Simon Horman <horms@verge.net.au>
2011-02-24ipv4: Rearrange how ip_route_newports() gets port keys.David S. Miller
ip_route_newports() is the only place in the entire kernel that cares about the port members in the routing cache entry's lookup flow key. Therefore the only reason we store an entire flow inside of the struct rtentry is for this one special case. Rewrite ip_route_newports() such that: 1) The caller passes in the original port values, so we don't need to use the rth->fl.fl_ip_{s,d}port values to remember them. 2) The lookup flow is constructed by hand instead of being copied from the routing cache entry's flow. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24PM: Make ACPI wakeup from S5 work again when CONFIG_PM_SLEEP is unsetRafael J. Wysocki
Commit 074037e (PM / Wakeup: Introduce wakeup source objects and event statistics (v3)) caused ACPI wakeup to only work if CONFIG_PM_SLEEP is set, but it also worked for CONFIG_PM_SLEEP unset before. This can be fixed by making device_set_wakeup_enable(), device_init_wakeup() and device_may_wakeup() work in the same way as before commit 074037e when CONFIG_PM_SLEEP is unset. Reported-and-tested-by: Justin Maggard <jmaggard10@gmail.com> Cc: stable@kernel.org Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-02-24xfrm: Const'ify xfrm_address_t args to xfrm_state_find.David S. Miller
This required a const'ification in xfrm_init_tempstate() too. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify ptr args to xfrm_state_*_check and xfrm_state_kern.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify xfrm_tmpl and xfrm_state args to xfrm_state_addr_cmp.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify policy arg to xp_net.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify selector args in xfrm_migrate paths.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify pointer args to km_migrate() and implementations.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify address argument to xfrm_addr_any()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify address arguments to xfrm_addr_cmp()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify address arguments to ->dst_lookup()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify selector argument to xfrm_selector_match()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify tmpl and address arguments to ->init_temprop()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Pass km_event pointers around as const when possible.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24Fix over-zealous flush_disk when changing device size.NeilBrown
There are two cases when we call flush_disk. In one, the device has disappeared (check_disk_change) so any data will hold becomes irrelevant. In the oter, the device has changed size (check_disk_size_change) so data we hold may be irrelevant. In both cases it makes sense to discard any 'clean' buffers, so they will be read back from the device if needed. In the former case it makes sense to discard 'dirty' buffers as there will never be anywhere safe to write the data. In the second case it *does*not* make sense to discard dirty buffers as that will lead to file system corruption when you simply enlarge the containing devices. flush_disk calls __invalidate_devices. __invalidate_device calls both invalidate_inodes and invalidate_bdev. invalidate_inodes *does* discard I_DIRTY inodes and this does lead to fs corruption. invalidate_bev *does*not* discard dirty pages, but I don't really care about that at present. So this patch adds a flag to __invalidate_device (calling it __invalidate_device2) to indicate whether dirty buffers should be killed, and this is passed to invalidate_inodes which can choose to skip dirty inodes. flusk_disk then passes true from check_disk_change and false from check_disk_size_change. dm avoids tripping over this problem by calling i_size_write directly rathher than using check_disk_size_change. md does use check_disk_size_change and so is affected. This regression was introduced by commit 608aeef17a which causes check_disk_size_change to call flush_disk, so it is suitable for any kernel since 2.6.27. Cc: stable@kernel.org Acked-by: Jeff Moyer <jmoyer@redhat.com> Cc: Andrew Patterson <andrew.patterson@hp.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: NeilBrown <neilb@suse.de>
2011-02-24Merge branch 'tipc-Feb23-2011' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/net-next-2.6
2011-02-24mm: prevent concurrent unmap_mapping_range() on the same inodeMiklos Szeredi
Michael Leun reported that running parallel opens on a fuse filesystem can trigger a "kernel BUG at mm/truncate.c:475" Gurudas Pai reported the same bug on NFS. The reason is, unmap_mapping_range() is not prepared for more than one concurrent invocation per inode. For example: thread1: going through a big range, stops in the middle of a vma and stores the restart address in vm_truncate_count. thread2: comes in with a small (e.g. single page) unmap request on the same vma, somewhere before restart_address, finds that the vma was already unmapped up to the restart address and happily returns without doing anything. Another scenario would be two big unmap requests, both having to restart the unmapping and each one setting vm_truncate_count to its own value. This could go on forever without any of them being able to finish. Truncate and hole punching already serialize with i_mutex. Other callers of unmap_mapping_range() do not, and it's difficult to get i_mutex protection for all callers. In particular ->d_revalidate(), which calls invalidate_inode_pages2_range() in fuse, may be called with or without i_mutex. This patch adds a new mutex to 'struct address_space' to prevent running multiple concurrent unmap_mapping_range() on the same mapping. [ We'll hopefully get rid of all this with the upcoming mm preemptibility series by Peter Zijlstra, the "mm: Remove i_mmap_mutex lockbreak" patch in particular. But that is for 2.6.39 ] Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Reported-by: Michael Leun <lkml20101129@newton.leun.net> Reported-by: Gurudas Pai <gurudas.pai@oracle.com> Tested-by: Gurudas Pai <gurudas.pai@oracle.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (33 commits) Added support for usb ethernet (0x0fe6, 0x9700) r8169: fix RTL8168DP power off issue. r8169: correct settings of rtl8102e. r8169: fix incorrect args to oob notify. DM9000B: Fix PHY power for network down/up DM9000B: Fix reg_save after spin_lock in dm9000_timeout net_sched: long word align struct qdisc_skb_cb data sfc: lower stack usage in efx_ethtool_self_test bridge: Use IPv6 link-local address for multicast listener queries bridge: Fix MLD queries' ethernet source address bridge: Allow mcast snooping for transient link local addresses too ipv6: Add IPv6 multicast address flag defines bridge: Add missing ntohs()s for MLDv2 report parsing bridge: Fix IPv6 multicast snooping by correcting offset in MLDv2 report bridge: Fix IPv6 multicast snooping by storing correct protocol type p54pci: update receive dma buffers before and after processing fix cfg80211_wext_siwfreq lock ordering... rt2x00: Fix WPA TKIP Michael MIC failures. ath5k: Fix fast channel switching tcp: undo_retrans counter fixes ...
2011-02-23tipc: Clean out all remaining instances of #if 0'd unused codeAllan Stephens
Remove all instances of legacy or proposed-but-not-implemented code that lives within an #if 0 ... #endif block. If some of it is needed in the future it can recovered out of history, but there is no need for it to clutter up the active code base. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-02-23tipc: Improve handling of invalid link tolerance valuesAllan Stephens
Enhances TIPC link code to ignore an invalid link tolerance value contained in an incoming LINK_PROTOCOL message, rather than processing the value and potentially causing a divide-by-zero error. Also add a compile-time check that catches attempts to redefine TIPC's minimum link tolerance value in a manner that might result in the same divide-by-zero error at run-time. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-02-23net: Implement SFEATURES compatibility for not updated driversMichał Mirosław
Use discrete setting ops for not updated drivers. This will not make them conform to full G/SFEATURES semantics, though. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23net_sched: long word align struct qdisc_skb_cb dataEric Dumazet
netem_skb_cb() does : return (struct netem_skb_cb *)qdisc_skb_cb(skb)->data; Unfortunatly struct qdisc_skb_cb data is not long word aligned, so access to psched_time_t time_to_send uses a non aligned access. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23net_sched: SFB flow schedulerEric Dumazet
This is the Stochastic Fair Blue scheduler, based on work from : W. Feng, D. Kandlur, D. Saha, K. Shin. Blue: A New Class of Active Queue Management Algorithms. U. Michigan CSE-TR-387-99, April 1999. http://www.thefengs.com/wuchang/blue/CSE-TR-387-99.pdf This implementation is based on work done by Juliusz Chroboczek General SFB algorithm can be found in figure 14, page 15: B[l][n] : L x N array of bins (L levels, N bins per level) enqueue() Calculate hash function values h{0}, h{1}, .. h{L-1} Update bins at each level for i = 0 to L - 1 if (B[i][h{i}].qlen > bin_size) B[i][h{i}].p_mark += p_increment; else if (B[i][h{i}].qlen == 0) B[i][h{i}].p_mark -= p_decrement; p_min = min(B[0][h{0}].p_mark ... B[L-1][h{L-1}].p_mark); if (p_min == 1.0) ratelimit(); else mark/drop with probabilty p_min; I did the adaptation of Juliusz code to meet current kernel standards, and various changes to address previous comments : http://thread.gmane.org/gmane.linux.network/90225 http://thread.gmane.org/gmane.linux.network/90375 Default flow classifier is the rxhash introduced by RPS in 2.6.35, but we can use an external flow classifier if wanted. tc qdisc add dev $DEV parent 1:11 handle 11: \ est 0.5sec 2sec sfb limit 128 tc filter add dev $DEV protocol ip parent 11: handle 3 \ flow hash keys dst divisor 1024 Notes: 1) SFB default child qdisc is pfifo_fast. It can be changed by another qdisc but a child qdisc MUST not drop a packet previously queued. This is because SFB needs to handle a dequeued packet in order to maintain its virtual queue states. pfifo_head_drop or CHOKe should not be used. 2) ECN is enabled by default, unlike RED/CHOKe/GRED With help from Patrick McHardy & Andi Kleen Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Juliusz Chroboczek <Juliusz.Chroboczek@pps.jussieu.fr> CC: Stephen Hemminger <shemminger@vyatta.com> CC: Patrick McHardy <kaber@trash.net> CC: Andi Kleen <andi@firstfloor.org> CC: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23mac80211: rename RX_FLAG_TSFTJohannes Berg
The flag isn't very descriptive -- the intention is that the driver provides a TSF timestamp at the beginning of the MPDU -- make that clearer by renaming the flag to RX_FLAG_MACTIME_MPDU. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-23net: Make flow cache paths use a const struct flowi.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23net: Mark flowi arg to flow_cache_uli_match() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to xfrm_state_find() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to security_xfrm_state_pol_flow_match() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to xfrm_selector_match() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark token args to addr_match() const.David S. Miller
Also, make it return a real bool. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to xfrm_type->reject() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to ->init_tempsel() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to ->fill_dst() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to ->get_tos() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg const in key extraction helpers.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
2011-02-22net: add __rcu annotations to sk_wq and wqEric Dumazet
Add proper RCU annotations/verbs to sk_wq and wq members Fix __sctp_write_space() sk_sleep() abuse (and sock->wq access) Fix sunrpc sk_sleep() abuse too Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22ipv6: Add IPv6 multicast address flag definesLinus Lüssing
This commit adds the missing IPv6 multicast address flag defines to complement the already existing multicast address scope defines and to be able to check these flags nicely in the future. Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22Merge branch 'urgent' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 * 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: pcmcia: re-enable Zoomed Video support cm4000_cs: Fix undefined ops warning pcmcia vs. MECR on pxa25x/sa1111 drivers/char/pcmcia/ipwireless/main.c: Convert release_resource to release_region/release_mem_region
2011-02-22Merge branch 'fix/asoc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ASoC: Ensure supplies are maintained for force enabled widgets ASoC: WM8994: Improve playback robustness ASoC: WM8994: Improve robustness in some use cases ASoC: WM8903: Fix mic detection enable logic ASoC: WM8903: Fix mic detection register definitions ASoC: CX20442: fix wrong reg_cache_default content ASoC: Sync initial widget state with hardware
2011-02-22ipvs: use hlist instead of listChangli Gao
Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au>
2011-02-21module: explicitly align module_version_attribute structureDmitry Torokhov
We force particular alignment when we generate attribute structures when generation MODULE_VERSION() data and we need to make sure that this alignment is followed when we iterate over these structures, otherwise we may crash on platforms whose natural alignment is not sizeof(void *), such as m68k. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Dmitry Torokhov <dtor@vmware.com> [ There are more issues here, but the fixes are incredibly ugly - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-21Bluetooth: Add mgmt_auth_failed eventJohan Hedberg
To properly track bonding completion an event to indicate authentication failure is needed. This event will be sent whenever an authentication complete HCI event with a non-zero status comes. It will also be sent when we're acting in acceptor role for SSP authentication in which case the controller will send a Simple Pairing Complete event. Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-21Bluetooth: Fix mgmt_pin_code_reply return parametersJohan Hedberg
The command complete event for mgmt_pin_code_reply & mgmt_pin_code_neg_reply should have the adapter index, Bluetooth address as well as the status. Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-21Bluetooth: Add management support for user confirmation requestJohan Hedberg
This patch adds support for the user confirmation (numeric comparison) Secure Simple Pairing authentication method. Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-21Bluetooth: Add mgmt_pair_device commandJohan Hedberg
This patch adds a new mgmt_pair_device which can be used to initiate a dedicated bonding procedure. Some extra callbacks are added to the hci_conn struct so that the pairing code can get notified of the completion of the procedure. Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-20tcp: Remove debug macro of TCP_CHECK_TIMERShan Wei
Now, TCP_CHECK_TIMER is not used for debuging, it does nothing. And, it has been there for several years, maybe 6 years. Remove it to keep code clearer. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-20pcmcia: re-enable Zoomed Video supportDominik Brodowski
Allow drivers to enable Zoomed Video support. Currently, this is only used by out-of-tree drivers (L64020 DVB driver in particular). CC: <stable@kernel.org> [for 2.6.37] Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-02-20Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: Documentation/feature-removal-schedule.txt drivers/net/e1000e/netdev.c net/xfrm/xfrm_policy.c
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